"Now you're just doing it on purpose." It's almost said dryly, because really, Tidus. Is this your solution. And it's not even the solution itself, oh no, it's the sheer enthusiasm that accompanies it. The two thumbs up over his shoulder. It's all just so Tidus.

"But-- don't turn around!"

It doesn't even matter if Tidus was actually about to turn around or not. Inigo calls it out anyway after saying only one normal word, like he's cutting himself off to warn Tidus from doing that. Someone's gaze on him may just ruin the whole thing all over again, okay!

".. But I guess I can.. try. Should I pick some music?"